A Vallecular Thyroglossal Duct Cyst Presenting with Persistent Unexplained Cough in a Toddler

Laryngeal cysts involving the valleculae are rare but well known cause of upper respiratory obstruction. Vallecular cysts are uncommon lesions seen in the pediatric population and mostly present within the first few weeks of life. They may present with diversity of clinical signs and symptoms including failure to thrive, stridor and respiratory distress. Thyroglossal duct cyst, on the other hand, is the most common pediatric congenital anomaly that usually presents as a midline anterior neck mass but may occur anywhere from the foramen cecum to the suprasternal region. We hereby report a case of thyroglossal duct cyst occurring in the vallecular region mimicking a vallecular cyst in a pediatric patient with unexplained cough.